I've been superbusy (ever try moving a household on a week's notice? Not fun!) but thanks to Tinder's PM, I finally figured things out. Should be working now.

Long version -

- A while ago, site had some CPU issues, host brought it down and told me to install wp-cache plugin
- wp-cache plugin screwed up some other stuff, I deactivated it some time later
- apparently, just having it installed broke something else, removing it entirely did the trick